Electrical condenser



April 12, 1927. I 4,332

v P. E. GILLING ELECTRICAL CONDENSER Filed Feb. 25, 1925 mvmrol? PRESTON E. Gum q:

I4 TTORN E Patented Apr. 12, 1927.

PRESTON E. GILLING, OF EAST ORANGE, NEW JERSEY.

ELECTRICAL CONDENSER.

Application filedFebruary 25, 1925. Serial No. 11,489.

This invention relates to an .electrical condenser in which a stack of alternate layers of mica and metal foil are built up and held between a pair of binding or bolster plates through the medium of clamping members which engage, not only the binding members, but the ends of the metal foil which have alternate layers brought out at the opposite ends of the condenser stack.

The condenser stack per se, may be constructed in any suitable'manner such as that described in Van Deventer Patent 1,181,623 issued May 2, 1916, or in the application of Harry A. Hatch, Serial No. 417,347 filed October 16, 1920, now Patent 1,574h-l24l, issued February 23, 1926. I

The condenser herein disclosed is particu larly adapted for use in connection with radio circuits and apparatus, although it is to be understood that it is not limited exclusively to this kind of use.

In the V an Deventer patent, and .Hatch applicationabove referred to. certain types of clamping terminals are shown and described. Theclamping member herein disclosed (litters from the terminals of said patentand application. .referredvt-o. or other prior art, in the details which will be hereinafter pointed out.

One of the objects of this invention is to provide a clamping member which not only acts to hold the condenser stack together and act a terminal, but, to provide means by which wires or conductors may be quickly attached or detached from the terminal.

In my application Serial No. 10214. filed February 19, 1925, I have shown and described a certain form of a quick detachable clamping terminal, my present invention lie-- inn directed to a modification of the quick attachable and detachable features.

.rtnothcr object of my invention to provide a terminal in which the whole condenser may be shifted on the conductors or bus-bars, or conductors for the purpose of balancing the radio set when the condenser is used therein.

My present invention will be best understood by reference to the drawing, in which-- Figurel is a plan view of the complete condenser showing a pair of conductors slidably attached thereto.

Figure 2 is a side view of Fig. ,1, and

Figure 3 is an end view of Fig.

Figmre 4 is a plan view of one form of clamping the terminal without the lugs for carrying a grid leak, as shown in the previous figures.

Figure 5 is a plan View of the condensers similar to that shown in Fig. 1, but with the grid leak mounted at right angles tothe planeof the condenser. I

In the various figures, 1 and 2 are terminal clamps whichare preferably nade of good stiff conductingrmaterial so that when brought into position over the stack, as shown in Fig. 1, they will'grip the binding or bolster plates 3 and 4 which are of insulating material, and of sufiicie'nt stiffness to insure that suflicient pressure maybe applied to the elements of the condenser so that the same will retain its rated capacity. The manner of-holding the terminal clamps land 2 in position over the stack is shown to be the same as that disclosed in said Hatch application; ears 5 being formed integral with the terminals v1 a'nd2 and these ears are adapted to be bent over into openings or depressions in the binding or bol-, ster plates 3 and 4 thereby holding the clamping terminals securely in position.

Other'means, similar to thosedescribed in my copendingapplication Serial No. 1QZ14 tiled February 19, 1925, ,may also be psed for the purpose of retaining the clamping terminals in position on the stack.

Coming now, particularly, to the details of my present invention, portions (5 and 7 are punched outwardly from the surface of the terminal, as shown in Fig. 4 before it is formed to fit the stack. A tongue 8 is also forced outwardly on the surface of the terminal plate, but in opposite direction to theuortions 6 and 7. The portions 6 and 7 are formed in a manner to provide eyelets 9 and 10, (see Figure 3) and the tongue 8 is formed into a position such that it serves to grip a conductor or bus-bar 11 when the same is inserted through a pair oi: eyelets. This gripping action will be evident "from an inspection of Fig. 3 in which the spring tongue 8 is so positioned that the end is out of alignment with the pair of eyelets on one of the terminal clamps. ent from Fig. l, the condenser is readily slidable on the bus-bars 11 and 12 to any desired position and in wiring up the set, it will be seen that the conductors 11 and 12 may be readily inserted without the necessity of soldering them to the terminal clamps. As shown in Fig. 1 the clamp 1 As will be apparhas a lug 13, and clamping terminal 2 :1 lug 1%, between which is mounted a high resistance unit or grid leak 15. As indicated in Fig. 4, the lugs 13 and 14 may not be used where a grid leak is not desired. In Fig. 5 the lugs 13 and 14 are so positioned and formed that the grid leak 15 is at right angles to the condenser.

By making clamping terminals to perform the additional function of acting as quick attachable or detachable connectors. as well as providing them with integral lugs for mounting a grid le: k resistance, I have 'materiall; reduced the cost of the condenser and the time in assembling it in a radio set.

Having thus described my invention what I claim is:

1. For a condenser of the class described, a clamping member having parts for embracing the stack with means for retaining the member in position on the stack in combination with means for attaching a conductor to said member comprising, a pair of eye lets arranged in substantial alignmentat opposite ends of said members, a spring member arranged between said eyelets and having a portion to engage a conductor inserted through said eyelets to act as a grip thereon.

2. For a condenser of the class described, a clamping member having parts for embracing the stack with means for retaining the member in position on the stack in combination with means for slidably attaching a conductor to said member comprising, a pair of eyelets formed in substantial alignment at opposite ends of the member from the material of said member, and a spring tongue formed from said member intermediate said eyelets and having a portion arranged to press against a conductor inserted through said eyelets.

3. For a condenser of the class described, a clamping member having parts for embracing the stack with means for retaining the member in position on the stack in c0mbination with means for slidably attaching a conductor to said member comprisin a pair of eyelets formed in substantial ahgnment at opposite ends of the member from the material of said member so the eyelets project from one side of the clamping member, and a spring tongue formed so as to project from the opposite side of said member between said eyelets so as to press against a conductor passed between said eyelets.

+2. As a part of a condenser unit, a clamping terminal member therefor having a lug to receive one end of a resistance unit, said terminal member also having a pair of formed eyelets spaced apart and a spring tongue positioned between said eyelets and having a portion normally out of alignment with said eyelets for the purpose described.

As a part of a condenser unit, a clamping terminal member therefor having a lug at one end to receive one end of a resistance unit, said terminal member also having a pair of eyelets formed in one direction at opposite ends of said terminal member, a

spring tongue formed from the terminal in a direction opposite from the two eyelets and intermediate them so as to grip a conductor inserted through said eyelets.

In testimony whereof, I atlix my signature.

PRESTON E. GILLINtx. 

